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试验目的近两年来在地处低丘红壤地带的金华县开化大队试验证实,对于水稻出现胡麻斑病及生理性的赤枯病的田块,客施紫砂土能抑制其发展,并获得显著增产。但对于增产原因分析不一:有的认为紫砂土富含磷、钾、钙等肥分,尤其钾、钙而起作用。也有认为紫砂土呈碎粒状,施入糊田能改变土壤机械组成,从而改善土壤通透性所致。为证实是否与改善土壤机械组成有关,特设本试验。
Experimental purposes In the past two years in the red hilly area of Jinhua County, Kaihua unit test confirmed that rice appear flamboyous disease and physiological blight of plots, the implementation of purple soil can inhibit the development and access to significant increase . However, different reasons for increasing production: Some think that purple soil rich in phosphorus, potassium, calcium and other fertilizer, especially potassium, calcium and work. There are also that purple soil is grainy, applied into the paste field can change the mechanical composition of the soil, thereby improving soil permeability caused. In order to confirm whether it is related to the improvement of soil mechanical composition, this test is ad hoc.